Northeast Wisconsin
Zone 4
Transmission system characteristics in Zone 4
ATC delivers power in Zone 4 with various transmission facilities including:
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Four 345-kV lines extending from the Point Beach Nuclear Plant,
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Two 345-kV lines extending from the Edgewater Power Plant,
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Four 345-kV lines connecting the Gardner Park, Werner West, Morgan, and Plains Substations,
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Two 345-kV lines from North Appleton to Werner West and Fitzgerald,
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Three 345-kV lines connecting South Fond du Lac Substation to the Columbia, Edgewater and Fitzgerald Substations, and
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A 138-kV network in the Fox River Valley/Green Bay area.
Transmission system limitations in Zone 4
In our analysis of Zone 4 we identified low voltages in the Brown County area. In addition, other studies occurring in parallel with this Assessment, including Northern Areas Studies performed by ATC and MISO, have identified several voltage and thermal limitations. The most severe limitations occur during the off-peak periods.
Electric system overview
Increases expected in population, employment – Population in Zone 4 is projected to grow 0.8 percent annually between now and 2022. Brown County is expected to realize the largest increase in population. Employment is projected to grow 1.0 percent annually in the same time period, with the largest increase projected in Outagamie County.
Electricity usage growing – Peak electric demand typically occurs during the summer months, although the northern portion of Zone 4 typically experiences nearly equal summer and winter peaks. Paper mills and foundries in the Green Bay and Appleton metropolitan areas are some of the largest electricity users in the zone.
Electric load is projected to grow at approximately 0.74 percent annually through 2022. Also, locally generated electricity is declining in the area with smaller, coal-fired generators most at risk. This includes generation owned by industries, municipalities and utilities.
Transmission projects in Zone 4
We have completed no network projects in Zone 4 since the 2012 Assessment. Our current plans in Zone 4 include 15 system reliability projects between 2013 and 2027, two of which are related to our new Study-Based Rating Methodology. These projects are in various stages of development. The most notable planned, proposed, provisional and asset renewal projects in Zone 4, along with their projected year of completion and the factors driving the need for the projects, are listed in the table below.
Zone 4 includes the counties of:
- Brown , WI
- Calumet , WI
- Dodge (NE) , WI
- Door , WI
- Fond Du Lac (E) , WI
- Kewaunee , WI
- Manitowoc , WI
- Marinette (S) , WI
- Menominee (S) , MI
- Menominee , WI
- Oconto , WI
- Outagamie , WI
- Shawano (E) , WI
- Sheboygan , WI
- Winnebago (E) , WI
Zone 4 Proposed Projects
| Project Description | In-service year | Need driver |
|---|---|---|
| Pulliam-Glory Road 138-kV line conversion | 2016 | Overloads and low voltages |
| Bay Lake: North Appleton-Morgan 345-kV and 138-kV line construction | 2017 | Overloads and low voltages |
| Branch River 345-kV Substation construction | 2018 | Accommodate new generation |
Zone 4 Provisional Projects
| Project Description | In-service year | Need driver |
|---|---|---|
| Shoto-Custer 138-kV line | 2022 | Overloads |
Zone 4 Asset Renewal Projects
| Project Description | In-service year | Need driver |
|---|---|---|
| North Appleton-Butte des Morts 138-kV line rebuild | 2014 | Condition and performance |
| Lost Dauphin-Glenview 69-kV line partial rebuild | 2014 | Condition and performance |
| North Appleton-Kewaunee 345‑kV line cross-arm replacement | 2015 | Condition and performance |
| Dyckesville-Sawyer 69‑kV line rebuild | 2016 | Condition and performance |
| First Avenue-Redwood 69‑kV submarine cable replacement | 2017 | Condition and performance |
| University-Danz Avenue 69‑kV underground cable replacement | 2018 | Condition and performance |
| Pulliam-Sobieski-Pioneer 69‑kV line rebuild | 2018 | Condition and performance |
| Oak Street-Highway V-Finger Road-Danz Ave 69‑kV line rebuild | 2018 | Condition and performance |
| Caldron Falls-Goodman 69‑kV line rebuild | 2019 | Condition and performance |
| Erdman-Lodestar 138‑kV underground cable replacement | 2019 | Condition and performance |
| Custer-New Holstein 69‑kV line rebuild | 2019 | Condition and performance |
| Wesmark-Manrap 69‑kV line rebuild | 2020 | Condition and performance |
| Finger Road-Canal 69‑kV line rebuild | 2020 | Condition and performance |
| Butte des Morts-Neevin-Woodenshoe-Mears Corners-Sunset Point 138‑kV line rebuild | 2020 | Condition and performance |
| Edgewater-Erdman 69‑kV underground cable replacement | 2021 | Condition and performance |